Sell something for me

I'm looking for a 1 page Sales Letter to get sent to a list of gamblers on a weekly basis offering them my Racing Tipster Service. I have the draft of it here Dear Bill, My name is Gavin Mc Williams and I'm writing to you today to introduce you to my Racing Tipster service.( This is too short needs to be expanded, try to think why someone would want to read a letter off you.) I would like to show you the value and quality of my private inside information. After I study the form and speak with my contacts, I then select the horse for my members each day.( On the right lines but needs to be reworded, expanded and give some indication of its value.) I only deal with a small group of private, honest and reliable people who want genuine inside information. So that you can decide for yourself the quality of the information, I would like to offer you a free bet for Saturday. (Explain what your service is NOT! No upfront payments no service charge no subscriptions no commitment. Easy text messages (not premium rate) no premium rate phone calls.) Please text FREEBET with your full name to my private line 07800006038 and I will give you my selection for Saturday. ( Reword (softer) All you need to do is …..) Thank you for taking the time to read my invitation and I look forward to receiving your text and working with you. Kind Regards, Gavin...